Foremost rhymes with:
almost, anteriormost, innermost, northernmost, outermost, southernmost, uppermost, utmost, westernmost, almost, amerihost, anteriormost, bundespost, cohost, goalpost, guidepost, innermost, lamppost, northernmost, outermost, outpost, overdosed, pancoast, seacoast, signpost, southernmost, sternpost, suncoast, uppermost, utmost, westcoast, westernmost
Foremost sounds like:
farmstead, firmest, franchised, franchot, franked, frenzied, furnished